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Yuliya22 [10]
2 years ago
14

If f (x) = 6x - 6, find f(-1).

Mathematics
2 answers:
densk [106]2 years ago
7 0

Answer:

Step-by-step explanation:

1

SpyIntel [72]2 years ago
4 0

Answer:

-12

Step-by-step explanation:

Hi Alyssa!,

For any x we multiply it by 6 and subtract 6 from it to get the F. The function tells us this. To find f(-1) it bassicly says what's f when x is -1. Well we know that. f is 6(-1)-6 whis is -12.

F is -12

JoeLouis2

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Penelope determined the solutions of the quadratic function by completing the square. F(x) = 4x2 8x 1 –1 = 4x2 8x –1 = 4(x2 2x)
Ymorist [56]

By solving the quadratic equation using completing the square method we got that Penelope should have added 4 to both sides instead of adding 1.

<h3>What is quadratic equation ?</h3>

Any equation of the form ax^2+bx+c=0 where x is variable and a, b, and c are any real numbers where a ≠ 0 is called quadratic equation .

Given work of Penelope is

$$\begin{aligned}&f(x)=4 x^{2}+8 x+1 \\&-1=4 x^{2}+8 x \\&-1=4\left(x^{2}+2 x\right) \\&-1+1=4\left(x^{2}+2 x+1\right) \\&0=4(x+2)^{2} \\&0=(x+2)^{2} \\&0=x+2 \\&-2=x\end{aligned}$$

Now we can see that Penelope determined the solutions of the quadratic function by completing the square. so he must have been done as following

$$\begin{aligned}&f(x)=4 x^{2}+8 x+1 \\&-1=4 x^{2}+8 x \\&-1=4\left(x^{2}+2 x\right) \\&-1+4=4\left(x^{2}+2 x+1\right) \\&3=4(x+2)^{2} \\&\frac{3}{4} =x+2)^{2} \\&\frac{\pm\sqrt3}{2} =x+2 \\&\frac{-2\pm\sqrt3}{2} =x\end{aligned}$$

By solving the quadratic equation using completing the square method we got that Penelope should have added 4 to both sides instead of adding 1.

To learn more about quadratic equations visit : brainly.com/question/1214333

8 0
1 year ago
What is the radius <br> (x + 10)² + (y - 8)2 = 169
d1i1m1o1n [39]

The given equation is an equation of a circle where the number after the equal sing is the radius squared.

To find the radius take the square root.

Radius = SQRT(169)

Radius = 13 units.

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sveta [45]
Just make a triangle and an X and Y axis and reflect it over the Y axis.  It's that simple.  Then tell how you did it.  Obviously it will be a reflection.  Name the points (before and after) and you are done.

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2 years ago
Please help me out!​
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Answer:

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7 0
2 years ago
An elementary school teacher wants to know if the words in a book are too difficult for her students. She reads the first senten
raketka [301]

Answer:

d.every word in the first sentence of the first page of every chapter.

Step-by-step explanation

  • the sample space means the set of total possible outcomes or ALL possible outcomes.
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3 years ago
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